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Preparation and cyclization of 4-chloro-5,5-dimethyl-3-formyl-1,2-oxathiolene 2,2-dioxide

✍ Scribed by Li Tian; Lun-Zu Liu

Publisher
John Wiley and Sons
Year
2005
Tongue
English
Weight
100 KB
Volume
16
Category
Article
ISSN
1042-7163

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✦ Synopsis

Chloroformylation of 5,5-dimethyl-1,2- oxathiolan-4-one 2,2-dioxide 4 with Vilsmeier reagent (DMF/POCl 3 ) led to the formation of cyclic Ξ²-chlorovinylaldehyde (4-chloro-5,5-dimethyl-3-formyl-1,2oxathiolene 2,2-dioxide 5). Compound 5 reacted with formamidine, o-aminophenol, 1,2-phenylenediamine, aminopyrazole, and aminotetrazole to give the corresponding heterocyclic compounds.

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